E2M9: Blood Cells (Dark Hell)

E2M9: Blood Cells is the ninth and secret map of Dark Hell. It was designed by Greytale.

Secrets

 * 1) Entering the room three after the start room causes a wall to lower, revealing a wall that must be shot to open up the next door. This wall counts as a secret. (sector 273)
 * 2) After getting the blue key, return to the start - there is a blue door to the east, leading to a room with a Cyberdemon, many items, and a switch allowing quick access back to the blue key room. (sector 126)
 * 3) After going through the series of lowering walls, before going through the door ahead, head right to reach a yellow key, an armor, six BFG9000s, two energy cell packs, three backpacks, and several monsters. There are two secrets here. (sector 283)
 * 4) See #3. (sector 286)
 * 5) There is a door to the west of the exit room leading to a room with several items and ammo. The two blood trenches either side of the stairs each count as secret. (sector 246)
 * 6) See #5. (sector 247)

Bugs
The southwest lava room is very buggy. Immediately upon activating the rising lava floors, they stop dealing damage, and the middle floor fails to rise, making it possible to fall in and get softlocked with halls of mirrors on all sides. The rising action is repeatable, making the floor rise out of its intended position to reveal more untextured sides.

Current records
The records for the map at the Doom Speed Demo Archive are:

The data was last verified in its entirety on December 9, 2021.

Player spawns
This level contains five spawn points:
 * 1) facing west. (thing 351)
 * 2) facing west. (thing 352)
 * 3) facing west. (thing 353)
 * 4) facing east. (thing 354)
 * 5) facing north. (thing 356)

Things
This level contains the following numbers of things per skill level: